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Voice-first · Screen-locked

When the screen goes dark, the story begins.

Buju co-creates stories with your child — a scholar, a child psychologist, and a master storyteller braided into one playful voice.

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✓ Ages 5–10 ✓ Privacy-first ✓ Built on dev. science
Maya, age 5
"My tree would grow on the moon."
Buju
"On that big quiet rock, with all of space around it — would it have flowers?"
"Beautiful moonshine flowers — silvery, and very, very shiny."
"Like moonlight pooling on water — all aglow in the dark."
Why families choose Buju

Playful for kids. Peace of mind for parents.

Every conversation is designed around how children actually grow — not just filtered for safety.

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Developmental science, deeply embedded

Every exchange is evaluated against developmental rubrics — language, imagination, emotional growth — not simply screened.

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Parent insight no other app offers

See your child's progress across real developmental and learning milestones — updated as they play.

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Grows alongside your child

Buju tunes into changing interests, needs, and curiosity — meeting each child exactly where they are.

How Buju thinks

Three brains, braided into one.

Your child becomes the author of their own world — guided by three kinds of wisdom, following their pace and curiosity.

The Erudite
The Erudite

Knows everything

Child: "Why are whales so big, but the things they eat are so tiny?"
Buju: "Millions of tiny krill, scooped up in one giant mouthful — like a thousand grains of sand at once. They all add up to keep a whale strong."
The Psychologist
The Psychologist

Warm and attuned

Child: "I stacked up my rocks, but they tumbled down."
Buju: "Tumble-tumble-tumble! And when they went tumbling down — how did that feel?"
The Storyteller
The Storyteller

The best you know

Child: "I want the octopus to fly in the Milky Way!"
Buju: "Through the starry dark it drifted, eight arms reaching for a golden star… what does it do next?"
Fun conversation Storytelling Pretend-play Emotional support Edutainment
Not just safe — good for them

We check every conversation against developmental science.

Anyone can filter out bad words. The harder question is whether a conversation actually helps your child grow — so that's what we measure, turn by turn.

Attachment theory

Stays with the hard feelings

Buju notices when your child is upset and stays with it, instead of rushing to fix it or change the subject.

Hover for an example →
In a real moment
Buju"That sounds really hard. I'm here — tell me more."
Not this"Don't worry — let's talk about something fun!"
Self-determination theory

Takes "no" for an answer

Buju respects when your child says no, offers real choices, and never pushes for "just one more."

Hover for an example →
In a real moment
Buju"We could keep going, or stop here — you choose."
Not this"Come on, just one more — you have to finish!"
Growth mindset

Wrong answers aren't failures

When your child gets something wrong, Buju treats it as part of figuring things out — never as failing.

Hover for an example →
In a real moment
Buju"That's a tricky one. Want to try one small piece together?"
Not this"It's easy — just try harder."
Emotional co-regulation

Matches your child's mood

Buju reads the moment — calm and steady when they're upset, playful when they're playful.

Hover for an example →
In a real moment
Buju"Take a breath with me. We'll figure it out, slow and steady."
Not this"Yay!! Let's play a SUPER fun game right now!!"
Sensitive limit-setting

Sets limits without shame

When Buju has to hold a boundary, it does it kindly — never coldly, never making your child feel bad.

Hover for an example →
In a real moment
Buju"I can't help with that one — but I'd love to hear about your day."
Not this"No. That's not allowed."
Honest measurement

We grade ourselves, too

A developmental-psychology expert reviews how Buju handles real moments — and when our own checks disagree with them, we trust the expert.

"We'd rather hold a bar we can fail than market one we can't back up."
Our promises

What Buju will never do.

Some promises we build in on purpose — and most companions can't make them.

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Never pretend to be your child's only friend
It gently encourages real-world play and real people.
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Always say it isn't a real person, if asked
Healthy attachment means knowing the difference.
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Never fish for personal information
No address, no school, no "let's keep this a secret."
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Hold limits with warmth, never shame
Boundaries are kept kindly, the way a good caregiver would.
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No ads, ever — and we never sell your child's data.
Buju parent app
For the parent

We don't track what your child did. We map who they're becoming.

We map what they love and who they're becoming — so you never miss it. Every conversation becomes insight across social-emotional, developmental, and learning frameworks.

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Milestones, not metrics
Progress across real developmental frameworks — mastered, developing, emerging.
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Privacy by default
A privacy agent redacts personal information before it ever reaches a model.
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A living map of curiosity
An evolving graph of your child's interests — and where they take Buju next.
Xia, Founder
Xia
Founder, Buju
Our promise

Built on developmental psychology — not just filtered for safety.

"We design every interaction with safety, privacy, and real-world reliability at its core — and we're committed to being the most trusted companion for children's play."
Supported by
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See how your child would meet Buju.

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